#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
int main()
{
int a,b;
printf("Before:%d\n",getpid());
a=fork();
printf("aa : %d\n",a);
b=fork();
printf("After:%d\n",getpid());
printf("bb : %d\n",a);
printf("cc : %d\n",b);
}
